/ Dictionary / Index C closed circuit: Meaning and Definition of Find definitions for: closed' cir'cuit Pronunciation: [key] — Elect. Elect. a circuit without interruption, providing a continuous path through which a current can flow. Cf. open circuit. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. closed chain closed-circuit television Related Content Daily Word Quiz: effervescent Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language